<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>最离谱的函数</title>
		<script>
			var str="alert(3+5)";
			eval(str);
			let a=32,b=44;
			let c=eval("a+b");
			alert(c);
			 c=eval("'a'+'b'");
			alert(c);
			
			var str="wd=js%E7%9A%84%E5%85%A8%E5%B1%80%E5%87%BD%E6%95%B0";
			alert(decodeURI(str));
			str="赵俊杰是个大杀x";
			alert(encodeURI(str));
		</script>
	</head>
	<body>
	</body>
</html>